Grinding-machine.



N0. 701,03l. Patented May 27, I902.

J. GILSON.

GRINDING MACHINE.

(Application filed Sept. 20, 1901.)

Q40 Model.)

1H5 uonms PETERS. co, PNUIO-LITNU., WASHINGTON D, c,

ATENT OFFICE.

JOHN GILSON, OF PORT \VASIIINGTON, WISCONSIN.

GRINDING- MACHINE.

SPEGIFIGATION forming part of Letters Patent No. 701,031, dated May 27,1902. Application filed September 20, 1901. Serial No. 75.914. (Nomodel.)

To all whom it may concern:

Be it known that 1, JOHN GILSON, a citizen of the United States, and aresident of Port Washington, in the county of Ozaukee and State of WVisconsin, have invented certain new and useful Improvements inGrinding-Machines; and I do hereby declare that the following is a full,clear, and exact description thereof. My invention has for its object toimprove the detail of that species of grinding-machines.

set forth in Patent No. 655,753, of August 14, 1900, as especiallydesigned for agriculturists, said invention consisting in what ishereinafter particularly specified with reference to the accompanyingdrawings and subsequently claimed.

Figure 1 of the drawings represents an elevation of the improvedmachine, partly in section, lengthwise thereof; Fig. 2, a plan view of aportion of the machine-base and vertically-adj ustable incline-planebrackets therewith, these brackets being a feature of the improvements;Fig. 3, a detail sectional elevation illustrating one of said bracketsin connection with the base and supporting the reciprocativegrinding-device carrier of the machine; Fig. 4, a detailpartly-sectional View indicated by line t a in the first figure; andFig. 5, a detail perspective View illustrating the lower portion of acarrier-support having detachable connection with said base, thissupport and a base-rib engageable therewith being another feature of.the improvements.

Referring by letter to the drawings, A indicates the cast-metal base ofthe improved machine, provided with the usual lugs b and rests c thereonfor abutment of a sickle-bar and knife-sections of the same, this base,standard-yoke B, rocker-yoke O, grindingdevice carrier D, clamp-jaw E,and means for tightening said jaw being similar in general constructionand arrangement to like parts set forth in the aforesaid patent, anyimprovements being means for automatic lift of said carrier at thefinish of stroke in either direction of its reciprocation and forholding the aforesaid carrier in stationary elevated position whendesirable.

In accordance with my improvements the base A is provided with a pair ofparallel vertically-slotted and flanged standards F, that constituteguides for depending apertured shanks d of converging incline planes G,bolts 6 engaging the standard-slots, shank-apertures, and nuts f to holdthe brackets comprising said planes and their shanks invertically-adjusted position. The incline-plane brackets are in the patlof a journal-bearing g,constituting part of carrierD, when the machineis being used for grinding knife-sections of sickle-bars, the grindingdevice l-l being best shown in Fig 3. By means of the incline planebrackets the carrier and grinding device H therewith are automaticallylifted at the finish of stroke on the part of said carrier in eitherdirection of its reciprocation, whereby overgrinding of thesickle-barknifesections is prevented, independent vertical adjustment ofsaid bracket-s being in proportion to the length of said knife-sections.

At the side of the machine farthest from standards F and on a linebetween these standards the base A is provided with an uprighttransverse rib I, the upper outer end of which is vertically extended inthe form of a lug h, and this rib is designed to fit a vertical centerrecess in the lower end of a'support 'J, that of itself is provided withinner lower end lugs 2, these lugs being caught under a lateral flange jof said base when the support is placed on said rib, abutting the lug hof same. The upper. portion of the support J is pr0- vided Witha seatfor a lateral stud 7c of the carrier Dand is preferably made with anangular recess, whereby said support may have the function of a wrenchwhen detached from the 1nachine.- p

When positioned in connection with the base and grinding-device carrierof the machine, the support J serves to hold said carrier stationary ata suitable elevation clear of the sickle-bar clamp and converginginclined planes G whenever necessary or desirablesay, for instance, whensaid inclined planes are being adjusted. However, the

support herein set forth is novel onlyin the peculiar construction ofits lower endand in combination withthe rib I and flange j of themachine-base, said support being a detachable appendage of the machineheld in working position independent of the clamp-jaw specified.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. A grinding-machine of the speciesdescribed having the clamp end of its base provided with an inclinedplane in the path of the reciprocative grinding-device carrier of themachine.

2. A grinding-machine of the species described having the clamp end ofits base provided with inclined planes arranged in the path of thereciprocative grinding-device carrier of the machine to automaticallylift the same when on stroke in either direction of its travel.

3. A grinding-machine of the species described having the clamp end ofits base provided with standards, and converging incline-plane bracketsvertically adjustable on the standards in the path of a portion of thereciprocative grinding-device carrier of the machine.

4. A grinding-machine of the species described having the clamp end ofits base pro-,

vided with verticallyslotted and flanged standards, converging inclineplanes having depending apertured shanks engaging the standards, boltsextendin g through the standard-slots and shank-apertures, and nuts runon the bolts, said planes being in the path of a portion of thereciprocative grinding-device carrier of the machine.

5. A grinding-machine of the species described having the clamp end ofits base provided with a lateral flange and an upright scribed providedwith an attachment in the form of a support having an upper end seat fora lateral lug on the grinding-device carrier of the machine, a lowerrecess for the engagement of a base-rib of said machine inside an upperlug extension of the same, and lower end lugs that extend under alateral base-flange of the aforesaid machine when said engagement iseffected, said support in working position serving to hold the carrierand grinding device of the machine in stationary elevated position.

In testimony that I claim the foregoing I have hereunto set my hand, atPort Washington, in the county of Ozaukee and State of Visconsin, in thepresence of two witnesses.

JOHN GILSON.

Witnesses:

H. W. BOLENS, T. A. BOERNER.

